Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 270 insertions, 0 deletions

diff --git a/drivers/scsi/ufs/ufs-qcom.h b/drivers/scsi/ufs/ufs-qcom.h
new file mode 100644
index 000000000..295f4bef6
--- /dev/null
+++ b/drivers/scsi/ufs/ufs-qcom.h
@@ -0,0 +1,270 @@
+/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef UFS_QCOM_H_
+#define UFS_QCOM_H_
+
+#define MAX_UFS_QCOM_HOSTS	1
+#define MAX_U32                 (~(u32)0)
+#define MPHY_TX_FSM_STATE       0x41
+#define TX_FSM_HIBERN8          0x1
+#define HBRN8_POLL_TOUT_MS      100
+#define DEFAULT_CLK_RATE_HZ     1000000
+#define BUS_VECTOR_NAME_LEN     32
+
+#define UFS_HW_VER_MAJOR_SHFT	(28)
+#define UFS_HW_VER_MAJOR_MASK	(0x000F << UFS_HW_VER_MAJOR_SHFT)
+#define UFS_HW_VER_MINOR_SHFT	(16)
+#define UFS_HW_VER_MINOR_MASK	(0x0FFF << UFS_HW_VER_MINOR_SHFT)
+#define UFS_HW_VER_STEP_SHFT	(0)
+#define UFS_HW_VER_STEP_MASK	(0xFFFF << UFS_HW_VER_STEP_SHFT)
+
+/* vendor specific pre-defined parameters */
+#define SLOW 1
+#define FAST 2
+
+#define UFS_QCOM_LIMIT_NUM_LANES_RX	2
+#define UFS_QCOM_LIMIT_NUM_LANES_TX	2
+#define UFS_QCOM_LIMIT_HSGEAR_RX	UFS_HS_G3
+#define UFS_QCOM_LIMIT_HSGEAR_TX	UFS_HS_G3
+#define UFS_QCOM_LIMIT_PWMGEAR_RX	UFS_PWM_G4
+#define UFS_QCOM_LIMIT_PWMGEAR_TX	UFS_PWM_G4
+#define UFS_QCOM_LIMIT_RX_PWR_PWM	SLOW_MODE
+#define UFS_QCOM_LIMIT_TX_PWR_PWM	SLOW_MODE
+#define UFS_QCOM_LIMIT_RX_PWR_HS	FAST_MODE
+#define UFS_QCOM_LIMIT_TX_PWR_HS	FAST_MODE
+#define UFS_QCOM_LIMIT_HS_RATE		PA_HS_MODE_B
+#define UFS_QCOM_LIMIT_DESIRED_MODE	FAST
+
+/* QCOM UFS host controller vendor specific registers */
+enum {
+	REG_UFS_SYS1CLK_1US                 = 0xC0,
+	REG_UFS_TX_SYMBOL_CLK_NS_US         = 0xC4,
+	REG_UFS_LOCAL_PORT_ID_REG           = 0xC8,
+	REG_UFS_PA_ERR_CODE                 = 0xCC,
+	REG_UFS_RETRY_TIMER_REG             = 0xD0,
+	REG_UFS_PA_LINK_STARTUP_TIMER       = 0xD8,
+	REG_UFS_CFG1                        = 0xDC,
+	REG_UFS_CFG2                        = 0xE0,
+	REG_UFS_HW_VERSION                  = 0xE4,
+
+	UFS_TEST_BUS				= 0xE8,
+	UFS_TEST_BUS_CTRL_0			= 0xEC,
+	UFS_TEST_BUS_CTRL_1			= 0xF0,
+	UFS_TEST_BUS_CTRL_2			= 0xF4,
+	UFS_UNIPRO_CFG				= 0xF8,
+
+	/*
+	 * QCOM UFS host controller vendor specific registers
+	 * added in HW Version 3.0.0
+	 */
+	UFS_AH8_CFG				= 0xFC,
+};
+
+/* QCOM UFS host controller vendor specific debug registers */
+enum {
+	UFS_DBG_RD_REG_UAWM			= 0x100,
+	UFS_DBG_RD_REG_UARM			= 0x200,
+	UFS_DBG_RD_REG_TXUC			= 0x300,
+	UFS_DBG_RD_REG_RXUC			= 0x400,
+	UFS_DBG_RD_REG_DFC			= 0x500,
+	UFS_DBG_RD_REG_TRLUT			= 0x600,
+	UFS_DBG_RD_REG_TMRLUT			= 0x700,
+	UFS_UFS_DBG_RD_REG_OCSC			= 0x800,
+
+	UFS_UFS_DBG_RD_DESC_RAM			= 0x1500,
+	UFS_UFS_DBG_RD_PRDT_RAM			= 0x1700,
+	UFS_UFS_DBG_RD_RESP_RAM			= 0x1800,
+	UFS_UFS_DBG_RD_EDTL_RAM			= 0x1900,
+};
+
+#define UFS_CNTLR_2_x_x_VEN_REGS_OFFSET(x)	(0x000 + x)
+#define UFS_CNTLR_3_x_x_VEN_REGS_OFFSET(x)	(0x400 + x)
+
+/* bit definitions for REG_UFS_CFG1 register */
+#define QUNIPRO_SEL		0x1
+#define UTP_DBG_RAMS_EN		0x20000
+#define TEST_BUS_EN		BIT(18)
+#define TEST_BUS_SEL		GENMASK(22, 19)
+#define UFS_REG_TEST_BUS_EN	BIT(30)
+
+/* bit definitions for REG_UFS_CFG2 register */
+#define UAWM_HW_CGC_EN		(1 << 0)
+#define UARM_HW_CGC_EN		(1 << 1)
+#define TXUC_HW_CGC_EN		(1 << 2)
+#define RXUC_HW_CGC_EN		(1 << 3)
+#define DFC_HW_CGC_EN		(1 << 4)
+#define TRLUT_HW_CGC_EN		(1 << 5)
+#define TMRLUT_HW_CGC_EN	(1 << 6)
+#define OCSC_HW_CGC_EN		(1 << 7)
+
+/* bit definition for UFS_UFS_TEST_BUS_CTRL_n */
+#define TEST_BUS_SUB_SEL_MASK	0x1F  /* All XXX_SEL fields are 5 bits wide */
+
+#define REG_UFS_CFG2_CGC_EN_ALL (UAWM_HW_CGC_EN | UARM_HW_CGC_EN |\
+				 TXUC_HW_CGC_EN | RXUC_HW_CGC_EN |\
+				 DFC_HW_CGC_EN | TRLUT_HW_CGC_EN |\
+				 TMRLUT_HW_CGC_EN | OCSC_HW_CGC_EN)
+
+/* bit offset */
+enum {
+	OFFSET_UFS_PHY_SOFT_RESET           = 1,
+	OFFSET_CLK_NS_REG                   = 10,
+};
+
+/* bit masks */
+enum {
+	MASK_UFS_PHY_SOFT_RESET             = 0x2,
+	MASK_TX_SYMBOL_CLK_1US_REG          = 0x3FF,
+	MASK_CLK_NS_REG                     = 0xFFFC00,
+};
+
+enum ufs_qcom_phy_init_type {
+	UFS_PHY_INIT_FULL,
+	UFS_PHY_INIT_CFG_RESTORE,
+};
+
+/* QCOM UFS debug print bit mask */
+#define UFS_QCOM_DBG_PRINT_REGS_EN	BIT(0)
+#define UFS_QCOM_DBG_PRINT_ICE_REGS_EN	BIT(1)
+#define UFS_QCOM_DBG_PRINT_TEST_BUS_EN	BIT(2)
+
+#define UFS_QCOM_DBG_PRINT_ALL	\
+	(UFS_QCOM_DBG_PRINT_REGS_EN | UFS_QCOM_DBG_PRINT_ICE_REGS_EN | \
+	 UFS_QCOM_DBG_PRINT_TEST_BUS_EN)
+
+/* QUniPro Vendor specific attributes */
+#define PA_VS_CONFIG_REG1	0x9000
+#define DME_VS_CORE_CLK_CTRL	0xD002
+/* bit and mask definitions for DME_VS_CORE_CLK_CTRL attribute */
+#define DME_VS_CORE_CLK_CTRL_CORE_CLK_DIV_EN_BIT		BIT(8)
+#define DME_VS_CORE_CLK_CTRL_MAX_CORE_CLK_1US_CYCLES_MASK	0xFF
+
+static inline void
+ufs_qcom_get_controller_revision(struct ufs_hba *hba,
+				 u8 *major, u16 *minor, u16 *step)
+{
+	u32 ver = ufshcd_readl(hba, REG_UFS_HW_VERSION);
+
+	*major = (ver & UFS_HW_VER_MAJOR_MASK) >> UFS_HW_VER_MAJOR_SHFT;
+	*minor = (ver & UFS_HW_VER_MINOR_MASK) >> UFS_HW_VER_MINOR_SHFT;
+	*step = (ver & UFS_HW_VER_STEP_MASK) >> UFS_HW_VER_STEP_SHFT;
+};
+
+static inline void ufs_qcom_assert_reset(struct ufs_hba *hba)
+{
+	ufshcd_rmwl(hba, MASK_UFS_PHY_SOFT_RESET,
+			1 << OFFSET_UFS_PHY_SOFT_RESET, REG_UFS_CFG1);
+
+	/*
+	 * Make sure assertion of ufs phy reset is written to
+	 * register before returning
+	 */
+	mb();
+}
+
+static inline void ufs_qcom_deassert_reset(struct ufs_hba *hba)
+{
+	ufshcd_rmwl(hba, MASK_UFS_PHY_SOFT_RESET,
+			0 << OFFSET_UFS_PHY_SOFT_RESET, REG_UFS_CFG1);
+
+	/*
+	 * Make sure de-assertion of ufs phy reset is written to
+	 * register before returning
+	 */
+	mb();
+}
+
+struct ufs_qcom_bus_vote {
+	uint32_t client_handle;
+	uint32_t curr_vote;
+	int min_bw_vote;
+	int max_bw_vote;
+	int saved_vote;
+	bool is_max_bw_needed;
+	struct device_attribute max_bus_bw;
+};
+
+/* Host controller hardware version: major.minor.step */
+struct ufs_hw_version {
+	u16 step;
+	u16 minor;
+	u8 major;
+};
+
+struct ufs_qcom_testbus {
+	u8 select_major;
+	u8 select_minor;
+};
+
+struct ufs_qcom_host {
+	/*
+	 * Set this capability if host controller supports the QUniPro mode
+	 * and if driver wants the Host controller to operate in QUniPro mode.
+	 * Note: By default this capability will be kept enabled if host
+	 * controller supports the QUniPro mode.
+	 */
+	#define UFS_QCOM_CAP_QUNIPRO	0x1
+
+	/*
+	 * Set this capability if host controller can retain the secure
+	 * configuration even after UFS controller core power collapse.
+	 */
+	#define UFS_QCOM_CAP_RETAIN_SEC_CFG_AFTER_PWR_COLLAPSE	0x2
+	u32 caps;
+
+	struct phy *generic_phy;
+	struct ufs_hba *hba;
+	struct ufs_qcom_bus_vote bus_vote;
+	struct ufs_pa_layer_attr dev_req_params;
+	struct clk *rx_l0_sync_clk;
+	struct clk *tx_l0_sync_clk;
+	struct clk *rx_l1_sync_clk;
+	struct clk *tx_l1_sync_clk;
+	bool is_lane_clks_enabled;
+
+	void __iomem *dev_ref_clk_ctrl_mmio;
+	bool is_dev_ref_clk_enabled;
+	struct ufs_hw_version hw_ver;
+
+	u32 dev_ref_clk_en_mask;
+
+	/* Bitmask for enabling debug prints */
+	u32 dbg_print_en;
+	struct ufs_qcom_testbus testbus;
+};
+
+static inline u32
+ufs_qcom_get_debug_reg_offset(struct ufs_qcom_host *host, u32 reg)
+{
+	if (host->hw_ver.major <= 0x02)
+		return UFS_CNTLR_2_x_x_VEN_REGS_OFFSET(reg);
+
+	return UFS_CNTLR_3_x_x_VEN_REGS_OFFSET(reg);
+};
+
+#define ufs_qcom_is_link_off(hba) ufshcd_is_link_off(hba)
+#define ufs_qcom_is_link_active(hba) ufshcd_is_link_active(hba)
+#define ufs_qcom_is_link_hibern8(hba) ufshcd_is_link_hibern8(hba)
+
+int ufs_qcom_testbus_config(struct ufs_qcom_host *host);
+
+static inline bool ufs_qcom_cap_qunipro(struct ufs_qcom_host *host)
+{
+	if (host->caps & UFS_QCOM_CAP_QUNIPRO)
+		return true;
+	else
+		return false;
+}
+
+#endif /* UFS_QCOM_H_ */